Here's why:
* Predicate adjective: A predicate adjective modifies (describes) the subject of the sentence and follows a linking verb (in this case, "is").
* Subject: The subject is "The race car driver".
* Linking verb: The linking verb is "is".
* Predicate adjective: "Daring" describes the race car driver.
Therefore, "daring" is the predicate adjective in the sentence.